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Finding the Fourth Proportional to 86,576.91, 129,812.81 and 33,923.31

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Solution

The fourth proportional to 86,576.91, 129,812.81 and 33,923.31 is: 50,864.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,576.91 : 129,812.81 = 33,923.31 : x
  2. Step 2: Convert to fraction form
    86,576.91/129,812.81 = 33,923.31/x
  3. Step 3: Cross multiply
    86,576.91x = 129,812.81 × 33,923.31
  4. Step 4: Simplify right side
    86,576.91x = 4,403,680,025.98
  5. Step 5: Solve for x
    x = 4,403,680,025.98/86,576.91
  6. Step 6: Final answer
    x = 50,864.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.